CVE-2024-21678
8.5 · HIGHThis High severity Stored XSS vulnerability was introduced in version 2.7.0 of Confluence Data Center.
Overview
CVE-2024-21678 is a high-severity vulnerability. It was published on February 20, 2024 and has a CVSS 3.1 base score of 8.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical description
This High severity Stored XSS vulnerability was introduced in version 2.7.0 of Confluence Data Center.
This Stored XSS vulnerability, with a CVSS Score of 8.5, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, low impact to integrity, no impact to availability, and requires no user interaction.
Data Center
Atlassian recommends that Confluence Data Center customers upgrade to the latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
||Affected versions||Fixed versions||
|from 8.7.0 to 8.7.1|8.8.0 recommended or 8.7.2|
|from 8.6.0 to 8.6.1|8.8.0 recommended|
|from 8.5.0 to 8.5.4 LTS|8.8.0 recommended or 8.5.5 LTS or 8.5.6 LTS|
|from 8.4.0 to 8.4.5|8.8.0 recommended or 8.5.6 LTS|
|from 8.3.0 to 8.3.4|8.8.0 recommended or 8.5.6 LTS|
|from 8.2.0 to 8.2.3|8.8.0 recommended or 8.5.6 LTS|
|from 8.1.0 to 8.1.4|8.8.0 recommended o
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2024-21678?
CVE-2024-21678 is a high-severity vulnerability. It was published on February 20, 2024 and has a CVSS 3.1 base score of 8.5 (HIGH).
How severe is CVE-2024-21678?
This vulnerability has a CVSS 3.1 base score of 8.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2024-21678?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2024-21678?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-21678 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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